C Define and Use Structures

C Define & Use Structures – Create and Access Structured Data

In C programming, after defining a structure using the struct keyword, you can declare variables of that structure type and use them to group and manipulate data effectively.

🔹 Defining a Structure

Let’s define a simple structure for an employee:

struct Employee {
    int id;
    char name[50];
    float salary;
};

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🔹 Declaring Structure Variables

After defining the structure, you can declare variables like this:

// Declare one variable
struct Employee emp1;

// Declare multiple variables
struct Employee emp2, emp3;

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📝 Example: Initialize and Use Structure Members

Here’s a full example showing how to define, assign, and print structure members:

#include <stdio.h>
#include <string.h>

struct Employee {
    int id;
    char name[50];
    float salary;
};

int main() {
    struct Employee emp1;

    emp1.id = 101;
    strcpy(emp1.name, "John Doe");
    emp1.salary = 55000.50;

    printf("Employee ID: %d\n", emp1.id);
    printf("Name: %s\n", emp1.name);
    printf("Salary: %.2f\n", emp1.salary);

    return 0;
}

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📌 Note:

  • Use the dot operator . to access structure members.
  • Use strcpy() to assign values to character arrays.

🎯 Practice Tip!

Try creating your own structure for a Product with fields like code, name, and price. Play with initializing and printing the data!